Home / 18,915.75-26,109.09-11,364.48

Finding the Fourth Proportional to 18,915.75, 26,109.09 and 11,364.48

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Solution

The fourth proportional to 18,915.75, 26,109.09 and 11,364.48 is: 15,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.75 : 26,109.09 = 11,364.48 : x
  2. Step 2: Convert to fraction form
    18,915.75/26,109.09 = 11,364.48/x
  3. Step 3: Cross multiply
    18,915.75x = 26,109.09 × 11,364.48
  4. Step 4: Simplify right side
    18,915.75x = 296,716,231.12
  5. Step 5: Solve for x
    x = 296,716,231.12/18,915.75
  6. Step 6: Final answer
    x = 15,686.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.